Reviews by patients who have Tooth Pain and take Zinc either as part of daily diet or as method of treatment. Positive and negative experiences from patients with Tooth Pain that take Zinc
1 Red or black colored stool may be a sign of bleeding in the GI tract (from the esophagus, stomach, small intestine or colon) and should not be ignored.  When stool color changes, what tests need to be done depend upon depends upon what cause is suspected for the stool color change.
Black stool is often a symptom associated with other gastrointestinal complaints and can potentially indicate a stomach related problem. Black stool often appears tarry, can have a foul smell and may show abdominal discomfort too. Stools can appear black due to the presence of blood in it.